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Bleach powder hazard?
Hi, has anyone tried mixing bleach powder formulations?
Can you use a blender or do you need a special equipment?They contain persulfates…which are strong oxidation agents.Typical INCI : Sodium Persulfate, Sodium Silicate, Sodium Stearate, Silica, Ammonium Persulfate, Hydroxymethyl Cellulose, Disodium EDTA, Carbomer, -
11 Replies
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in my view you’d be best off seeking specialist advice
depending on the batch sizes involved and the particle size of the finished product, mixing and filling powder bleach can potentially be a HUGE fire hazard
because of this (and because our site in the middle of a residential area), we’ve always subcontracted it to a third-party manufacturer
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@ Bill_Toge :thanks, specialist advice is exactly what I am seeking!
I should have added I am only interested in lab-scale formulating - Do I need special equipment for that?It doesn’t seem to have any alarming hazards lab-scalehttp://www.pantherindustriesinc.com/msds/AmmoniumPersulphate.PDF
I know it is hazardous to produce and fill it. -
You need the advice of an industrial chemist rather than a cosmetic chemist. I don’t know enough about possible reactions to advise you. Some bleaches - for instance peroxides - combine with all sorts of lab materials, especially solvents, to form high explosives.
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thanks Belassi - you are right - I try to search elsewhere - I feel neither my (old) inorganic chemistry courses or usual cosmetic chemistry knowledge is enough here.
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@David you won’t need specialist equipment in the lab; the most appropriate precautions would be to use a dust mask at all times, don’t mix it using equipment made from any other metal than good quality stainless steel, and keep it away from moisture and sources of ignition
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Its a Solid-Solid mixing, but generally bleach is highly irritant and harmful to inhale. I faced some of the dangerous incident while mixing in lab becoz of quick formation of peroxide. U can use Zip lock plastic bags for mixing along with safety gloves and mask. If possible, better to carry out under supervision of experienced chemist.
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Thanks Bill_Toge
ashish: how did you get peroxide formation?
I am not so worried about the powder itself - I use of course standard protection like gloves mask and safety glasses . What I am worried about is whether this mixture can ignite or explode in a simple kitchen blender like this one:
http://www.amazon.com/dp/B00CT9Y41Q -
I agree with @Bill_Toge . I used to do it (lab scale only, you need special equipements for big batches) with gloves, mask and a good quality little kitchen mixer (like the ones for baby). Using a zip lock plastic bag is a good idea too. Be carefull with water and it will go well !
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Thank you all !- I feel a bit more comfortable regarding this project now.
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Just be careful.
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I’d be very careful mixing persulfates with a fuel such as sodium stearate in a dry state. With the ammonium sulfate in there, even traces of transition metals could sensitize the mixture. The friction of a kitchen blender could be enough to ignite it, not to mention the possibility of a dust of it reaching the motor housing, where electric sparks could occur.
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